* docs(skip-links): add a skip to main navigation skip link

* docs(skip-links): revamp skip-links pattern

* docs(navs): use aria-label on navs

* docs(navs): use 'docs navigation' label in sidebar nav

v5: Underline links

Bumps [linkinator](https://github.com/JustinBeckwith/linkinator) from 2.0.3 to 2.0.4.
- [Release notes](https://github.com/JustinBeckwith/linkinator/releases)
- [Commits](https://github.com/JustinBeckwith/linkinator/compare/v2.0.3...v2.0.4

)

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Co-authored-by: XhmikosR <xhmikosr@gmail.com>

Bumps [rollup](https://github.com/rollup/rollup) from 2.0.6 to 2.1.0.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rollup/rollup/compare/v2.0.6...v2.1.0

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* Fix commonmark syntax

related https://github.com/gohugoio/hugo/issues/6553



* Fix indentation

Co-authored-by: XhmikosR <xhmikosr@gmail.com>

This reverts commit dd75ac6c.

This reverts commit bcf76ef5.

This reverts commit 15d242d2.

Open icons in a new tab like the rest of the external links

Fixes a few npm vulnerabilities.

Co-authored-by: Laurens Nicolay <laurens.nicolay@intracto.com>

fix: ensure `totype` always returns stringified null/undefined when null/undefined is passed (#30383)

This allows the minifier to mangle the constants. It also allows the linter to find unused strings properly.

While at it, remove a few unused properties.

File                        Before      After       Diff
--------------------------------------------------------
bootstrap.bundle.min.js     23.61 kB    22.61 kB    -1.00 kB (-4.23 %)
bootstrap.min.js            17.04 kB    16.08 kB    -0.96 kB (-5.63 %)

Co-authored-by: Mark Otto <markd.otto@gmail.com>

Bumps [terser](https://github.com/terser/terser) from 4.6.6 to 4.6.7.
- [Release notes](https://github.com/terser/terser/releases)
- [Changelog](https://github.com/terser/terser/blob/v4.6.7/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/compare/v4.6.6...v4.6.7

)

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Bumps [eslint-plugin-unicorn](https://github.com/sindresorhus/eslint-plugin-unicorn) from 17.1.0 to 17.2.0.
- [Release notes](https://github.com/sindresorhus/eslint-plugin-unicorn/releases)
- [Commits](https://github.com/sindresorhus/eslint-plugin-unicorn/compare/v17.1.0...v17.2.0

)

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Bumps [hugo-bin](https://github.com/fenneclab/hugo-bin) from 0.55.0 to 0.55.1.
- [Release notes](https://github.com/fenneclab/hugo-bin/releases)
- [Commits](https://github.com/fenneclab/hugo-bin/compare/v0.55.0...v0.55.1

)

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Bumps [rollup](https://github.com/rollup/rollup) from 2.0.3 to 2.0.6.
- [Release notes](https://github.com/rollup/rollup/releases)
- [Changelog](https://github.com/rollup/rollup/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rollup/rollup/compare/v2.0.3...v2.0.6

)

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Bumps [vnu-jar](https://github.com/validator/validator) from 20.2.28 to 20.3.16.
- [Release notes](https://github.com/validator/validator/releases)
- [Changelog](https://github.com/validator/validator/blob/master/CHANGELOG.md)
- [Commits](https://github.com/validator/validator/compare/v20.2.28...20.3.16

)

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Fixes beeing able to control `.is-valid` & `.is-invalid` input:focus opacity